Water-gage for steam-boilers.



1.5. FROEHMCH.

- WATER GAGE FOR STEAM BOLERS. MPL10/mon man APP.. 25. 19|?.

Panted Non 20, 1.9i?.

'Call SB www l Spcicatlou of Miter-.s Patent,

' To all 'whom #may cncem:

Be it kno-wn'that JGHN J. Fmmmiom a citizen of the United States, iosidiig; at Dickinson, in the county of Stark andtztto of North Dakota, has inventati certa-iin nsw and useful mp'ovements in WaterLGnges for Steam-Boi1erS, of which the :toilowing is a specification, refo'ifonoo being; had to tho accompanying drawings.

This invention reltes to boers, and particuariy to devices for determining the dept-h of water over the crown shoot of a boiioyf.

Tilogenei'a objeot of tho invention isto "pmwf'ide an impovedv form of which wiil indieatothe depth of wat@ in the boils? anni' will show exactly the hoight of the boiler' above the crown Sheet theicoi, thug doimgnaway with thouse of glasses, which are Very liable to 'break undef.' the pressa@ to which they are suhjecto ami which mg@ glasses are open to obioctiom--bo Noter efyolcannot be readily discomo@ mfough the rolativeiy thick and msu aliy dirty gasa' of tho gage A furtiie objeot is to prow/Me a' Witter ievei imdimtoi of the oirwaizioter descr. 5o arranged that a pro-iastate gage may oo connected with it;

nd a futher object is to provid@ a Wotan evel indisator including a float, :L poimta' ,op-'oratiig @vor :t dial ami controii@ by thev Hoot, anni means for 'draining the ceasing' Whoreit the operatmg, mechamsm is oon tained.

Stii mother object iS to pivot/'ide moans Whoreny the ltubular guido through which thooat md operates may bo'ndylsted vor- 'ticaiiy through the upper W211i of the boite toftiieotiy causa the device to be :adapted to attfiohmonts of different limites of Doilmes hmfing' di i'oront depths. of water level abovo thocrown sheet.

'tiierobjects will appaalin tiio comfso of the oowing :ioox'iptou Figjmo `io a Sectional, viowof a boite? an@ my iiipi'owad gage;

Fig. Qlis :a {iw/nt eovntion oit n portion ofthe gagjo:

fig. 3 away.

is n sld@ oovsxtion,

to the drmfiuggga itrwi be, soon 1 mipmvadgmge Gory moo-s tub .imfhmti i@ Maggio@ itgeamort partly brolzm tiwouggb; anognoiningg in the tipps? shoot; ox'- slwt-ll of a, boiler i2, thas'tumim" @moet l, Whisk -coiistl tutos; a @pluim fai-ngt? uppw on@ y of tho guido: tuboA 3,0 ovitoifiorijf screw-thraztdod to extend-imo time, will oi a. casing 16. Tho tippt-:ir :msi iowa' enit@ the tubo i() are oom, but tim 1mm? wat minding; tributar 'thingie 10% tiwceA-b "I tion md l'ooipii'ooat'tngf throubn tima is bearing; dtiiifotsfgh tho tubo 'i9 ia :i Tod. i8, the owov .fend oit which fit-u to n,

5m: Y out oit de, tubo 1Q. Thom y,

Mis similia? .A Mii@ rougi;

tho fi ia: :1 't y im w n is mounted tim gaat idioot @hr an @mig oit .touffu :i sto *Y bois: for

operating ovm' the dial pinto. im: margin of the dial pinto proift-a A' witbaxsm" :5 of t nnmw'zais arranged in Succossivo mitm mail the poi-Etoi- 35 ooacts with theseminifalda glass pitite' Q6 pxc'fombiy fax' 1 2 owja-wf thu {mimm' so no to entirely homo ami tho dial. Tho umm' omi olif the that, roti '1S is; provided with met; tooth whici'i the. gom' Whoo] iii?. The upm? @Xtr tho @ont rmi 18 Vonglqa($21161 by Hout-Toti guido 23 attach@ to that, wail ot th@ sawing :mithafving a imi( through wdiclo o i'ioat Voci 'pmsses this iout rod guide 2t?- hoiziii tho mok tooth, 27 in proper engagea mi the tooth on tho gom-4 wht-ci iiomtho i'hiokonod portion l5 of the ,(zifi'xiglg, tho ing-.iss plovided. with u tbiokeioot port it 5R19.,

niitaohmontlo a @lminas mambo? .3th

with m hinge 32 and held closed in any suitable manner and there should be gaskets disposed between the two sections so as to make the joint steam-tight. A drain pipe 33 extends downward from the lowermost portion of the casing 16 and discharges into the pipe 10, this drain pipe being preferably formed in two sections connected by a union 34. Preferably also a ball bearing 35 is provided for supporting the ends of the shaft 21, so as to permit the shaft 21 to rotate easily and prevent the pressure against the gage rod acting to impede its free movement.

Assuming that the device is'intended to indicate a maximum depth of 8 of water over the crown sheet, then the gear wheel 22 should be 8 in circumference and the rack-teeth 27 should extend over a length of 8". If the maximum depth of water to be measured is greater or less than 8 it is obvious that the proportions of the rack teeth and gear wheel will be accordingly changed. The extension 30 oi? the tubular member must be suiiiciently long of course as to permit the rack to move upward to its full stroke.

The ga `e is -to be set as close to the boiler as possib e.

The operation of this invention may be obvious from what has gone before. it' the water lowers inthe boiler, the float 20 will move downward correspondingly, which will lower the doat rod 18 and rotate the pointer 25 in. a Counter-clockwise direction. Ii', on the other hand, the `water in the boiler rises, the iioat will rise and rotate the hand in a clockwise direction. The dial is graduated so that the distance of the iioat from the crown sheet oi the boiler may be read in inches and fractions thereof. lThe tube l0 is adjustable through the supporting box 13 so that the tube 1G may be pushed up or down and so adjust the device that the Hoat will strike the lower sheet of the boiler when the pointer 25 points to zero. The ioat 2() is of such weight that it will not jump up and down when the water in the boiier is boiling, but will remain relatively steady.

My device does away with the necessity of using gage glasses and shows positively and plainly the level of water withsin the boiler and the exact depth of water over the crown sheet. The device is very simple, can be cheaply made, can be used with or without the pressure gage and it is obvious that inasmuch as the device may be made of metal, there will be no chance of breakage trom internal pressure as there is with gage glasses. nor will there be any chance as there is in gage glasses,of the device be,- coniing so dirty as not to be easily read. lt' will be understood, oi course, that the casu ing 1b and the tube 10 will be full of steam. The ago is to be disposed directly over the Lacasse crown sheet at the rear end of the boiler and is adapted to be used on any standard boiler or on traction engines or locorfi'tive boilers.

While l have illustrated a form of my inventionV which I have found to be thoroughly effective in practice, yet it is obvious that I do not wish to be limited to the details of construction illustrated, as these may be varied in many ways, without departing from the spirit of the invention. This is particularly true of the gearing whereby the pointer is rotated.'

`Having described my invention, what I cla-im is l.l The combination with a steam boiler having upper and lower sheets, of a guide tube extending through the upper sheet and vertically adjustablejtherein, the lower end of said tube being formed with a stop7 a float rod extending upward through the guide tube and having afloat at its lower end, a rotatably mounted pointer, means operatively connecting the pointer to the float rod, and a. stop mounted upon the iioat rod within the guide tube and engageable with the stop on the lower end of the guide tube to thereby limit the downward movement of the float and rod 1 2. A water gage for boilers comprising. a tubular member adapted to be inserted through the upper sheet of a boiler and vertically ehiftable therein, and having ball bearings at. its lower end, a Heat rod extending entirely through 'the Vtubular member and carrying -a iioat at its lower end,-the upper end ot the rod being provided with teeth. a casing into which the upper end of the tubular member opens, a shait passing through the casing, a pointer on the Shaft, gratin-ations on the face of the easing over which the pointer moves, and a gear Wheel on the shaft operatively engaged with the teeth on the float rod. i

3. A water gage' for steam boilers iniuding a tubular guide adapted to be inserted through the upper sheet of a boiler, a, iioat rod extending upward through the guide, means 'for limiting the downward movement of the rod relative to the guide., oat carried on the lower end of the rod," t e upper end of the rod being formed with teeth a easing in which the upper end of the tubular guide opens, a shaft passing through the casing, a pointer carried on the shaft and operating lover a dial, a gear wheel operatively connected to the shaft and engaged by said teeth on the float rod, and a drain pipe extending from the lowermost portion of the casing and opening into said guide tube.

4. The combination with a boiler having an upper and a lower sheet, of a 4stuffing box mounted on the upper sheet, a guide tube disposed in the stuiiing box and vertically lil@ ehit'table therethrough, n float rod extending upward through the guide tube and having a `lozit at its lower end, a easing into which the upper end of the guide tube opens, e tube extending upward from the casing and in alinement with the guidetube, uy dial, u, pointer opereting over the dial, and means Controlled by the float rod 1to1' rotating the pointer over the dial.

The combination with. si steam boiler having upper und lower shee et u giixide tube extending through the upper sheet und vertically adjustable therein, tbegnide tube being open :it .itsupper und lower ends. n easing into which the guide tube opens, u tlout rod extending upward through the guide tube und easing und having u Hout at its lower end, n shaft mounted in the easing und extending through the. .wells thereof and carrying a pointer on one end, operative driving menne between the float rod and ASeid ehnt't to rotate the letter upon the reoiproeution of the iiont rod, and :i drain pipe lending from the lowest portion of the easing und discharging into said guide tube.

6. The eombinntion with steam boiler having upper und lower sheets, ot e guide tube extending through the upper sheet, n easing into which the upper end of the guide tube opens, :i tube extending upward from the easing and in alim-ement with the guide tube and carrying a pressure gage, a. shaft extendingl through the casing, a fiout rod disposed in the guide tube, a shaft eze tending through the easing, to which the float rod is operatively connected, end e.

pointer carried on thesheft.

T. The emnbinntion with n steam boiler having upper und lower Sheets, ot a guide tube extending upward through the upper sheet, the upper end of said guide tube being open,y the lower and having un annular flange, a easing into which the upper end of 'the guide tube opens, u tube extending upward troni the @using and in ulinement with the guide tube, n float rod passing through the 2guide tube und into Suid easing, u shaft carrying u pointer and extending through the (rising, u geur wheel on the shaft operetivelv engaged by the float rod, ball bearings mountedin the lower end oit the guide tube, :and n member mounted upon the lient rod und having Liuti-'l'rietion elements movable with the Hout rod und engngeuble with the walls of the guide tube, and a lont mounted upon the lower end of the Hout rod.

In testimony whereof I hereunto ntlix my signature in the bresenee ot two witnesses.

JOHN J. FBOEHUGH.

i llitnesses:

VALENTINE Kooi-i', H. FROEHMCH., 

